57 is what percent of 13.5 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 13.5 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 13.5, so we can write it down as 100%=13.5.
4. We know, that x% equals 57 of the output value, so we can write it down as x%=57.
5. Now we have two simple equations:
1) 100%=13.5
2) x%=57
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=13.5/57
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 57 is what percent of 13.5

100%/x%=13.5/57
(100/x)*x=(13.5/57)*x       - we multiply both sides of the equation by x
100=0.236842105263*x       - we divide both sides of the equation by (0.236842105263) to get x
100/0.236842105263=x
422.222222222=x
x=422.222222222

now we have:
57 is 422.222222222% of 13.5